BMW K bikes (Bricks)

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1Back to top Go down   Building the K75F (Frankenbrick) Empty Building the K75F (Frankenbrick) Mon May 27, 2019 5:08 pm

duck

duck
Life time member
Life time member
Back in 2010 when I built this bike I kept a running thread of the build over on ADV.  But then all of my Photobucket links got broken so that thread became pretty worthless.  So a few years ago I took the pictures and converted that thread into a web page. 

It went from this:
Building the K75F (Frankenbrick) K75f_003

To this:
Building the K75F (Frankenbrick) 00.k75f.build.title.pic


And here's how:
http://www.kbikeparts.com/classickbikes.com/ckb/1.my.k.bikes/10_K75F/k75f.3.build.htm


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
98 Taxi Cab K1200RS
14 K1600GT
http://www.ClassicKBikes.com
    

2Back to top Go down   Building the K75F (Frankenbrick) Empty Re: Building the K75F (Frankenbrick) Mon May 27, 2019 7:22 pm

Dai

Dai
Life time member
Life time member
Okay... now I understand your comment about not liking Dowty washers for the hydraulics. I am not in the slightest bit surprised that the rubber seal tore out when you torqued them up because of the shape of them. These are Dowty washers:-

https://www.ebay.co.uk/itm/Dowty-Seals-O-Rings-Bonded-Seals-Self-Centering-Hydraulic-Pneumatic-washer/132776054122?hash=item1eea11cd6aⓂmDsGCqRbfis89vgTGxmV10Q

I picked this picture deliberately because you can see the double-lipped circular seal which yours did not have. You can also see that the circular seal would not be caught up when torquing up. Another good thing about Dowty washers is that if you've bled the system and then find that the banjos are just fouling something (as I did today - one banjo on the master cylinder was rubbing against the back of the instrument housing) you can slacken them off slightly, move the banjo and re-tighten without getting air in the system.

The downside is that it's possible to bleed the system and successfully bring it up to pressure when you've only wound the banjo up finger-tight Laughing. No, it didn't leak and yes, it retained the pressure for three days before I found it by accidently against knocking it.


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1983 K100 upgraded to K100RS spec, 1987 K100RT
Others...
1978 Moto Guzzi 850-T3, 1979 Moto Guzzi 850-T3 California,1993 Moto Guzzi 1100ie California
2020 Royal Enfield Bullet 500
    

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